Digital BW, The Print

Roy,

Sorry, my wording and conception of ICC are quite approximative.

So yes whether grey dot 15,20%, gamma1.8, 2.2... the profile will 
still do its job of converting from source to destination. My initial 
purpose was just to visualise the QTR ICC in action. Because I don't 
understand why when I look at the generic Matte Profile the kTRC is 
(far) above the 45° while my QTR ICC is (far) below ? And this should 
have nothing to do with working spaces : all is done in QTR with no 
CMS. Have done it wrong ? kTRC curve reflects sourceL to destinationL 
right ? so my ICC would actually darken the print, while the generic 
Matte lightens it ???

I personally can't really visualise the print without the soft 
proofing. At least as of now it reflects the paper white (in L) 
calling sometimes for addtional contrast. Besides, as a matter of 
fact I played a bit today with the Matte Profile and could see it 
does add something to preview prints with and without BPC also to 
determine a wanted contrast.  
So how do you recommend soft proofing as of now : perceptual, white 
paper on(that also shows Black ink) and forget BPC that can not (yet)
be used ?

Thanks.

Olivier